CN102982742A

CN102982742A - Full-color OLED (Organic Light Emitting Diode) display made by adopting multi-component OLED luminescent device technology and filtering technology

Info

Publication number: CN102982742A
Application number: CN2012104881466A
Authority: CN
Inventors: 李崇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-26
Filing date: 2012-11-26
Publication date: 2013-03-20

Abstract

The invention relates to a full-color OLED (Organic Light Emitting Diode) display made by adopting a multi-component OLED luminescent device technology and filtering technology. The full-color OLED display comprises an optical filter substrate, an OLED luminescent device and a drive unit used for driving the OLED luminescent device to emit light, wherein each optical filter membrane layer in the optical filter substrate is provided with an OLED luminescent device corresponding to the optical filter membrane layer, and all OLED luminescent devices are the same in structures. The full-color OLED display is characterized in that electroluminescent luminescent spectrums generated by the OLED luminescent devices under the electrifying condition comprise at least two groups of groups of blue light luminescent components with CIE (Commission International Eclairage) color coordinate Y values of less than 0.55, red light luminescent components with CIE color coordinate X values of more than 0.64, and green light luminescent components with CIE color coordinate Y values of more than 0.55. The full-color OLED display has the advantages of long service life, high fineness, high yield, large size and the like, and is beneficial to the increase of the total manufacture cost performance of the display.

Description

The full color OLED display that polycomponent OLED luminescent device technology is made in conjunction with optical filtering technique

Technical field

The present invention relates to the full color OLED display that a kind of polycomponent OLED luminescent device technology is made in conjunction with optical filtering technique, belong to display manufacturing technology field.

Background technology

In the prior art, the full color OLED display has three kinds of different production methods usually: the first is by OLED luminescent devices different on the picture element matrix is directly applied electric field, thereby obtains independently luminous " the red green blue tricolor illumination mode " of RGB; The second is that the OLED that utilizes the filter coating cutting background White OLED luminescent device of different color to produce is luminous, thereby obtains red-green-blue luminous " white light adds the optical filter mode "; The third is to absorb effective OLED earth complex luminescent component in background ultraviolet, blueness, the light blue or White OLED luminescent device by color transformed film, wherein high-octane blue-light-emitting transforms into low-energy green glow or ruddiness, thereby obtains luminous " color change manner " of redgreenblue.

" red green blue tricolor illumination mode " compares, rear two kinds of full color OLED display manufacturing modes relatively, when manufacturing display, be easy to realize the large scale of display, high-precision refinement and rate of good quality rate, and be easy to improve the ratio of performance to price of display manufacturing.Yet with regard to the manufacturing process of color change manner full color OLED display, it is very complicated that substrate is made technique.The process structure of traditional color change manner full color OLED display comprises color transformed substrate and OLED luminescent device.Be coated with successively color transformed rete, planarization rete and the protective seam of redgreenblue filter membranous layer and black matrix" grid rete, red green two kinds of colors on the transparency carrier, thereby form color transformed substrate; The OLED luminescent device that is comprised of transparency conductive electrode layer, the combination of organic luminescence function film layer and reflection electrode layer is being set at color transformed rete.

In tradition color change manner full color OLED display device structure and the manufacturing process; in order to eliminate aqueous vapor remaining in color conversion layer or the filter membranous layer OLED luminescent device is produced harmful effect; reduce because the generation of the dark space (Dark area) that this impact produces; usually also need on the planarization rete, also need to make layer protective layer, this protective seam to play and stop that aqueous vapor enters the effect of OLED luminescent device.

From above parsing for color change manner full color OLED display fabrication process, the color transformed substrate that consists of color change manner full color OLED display approximately needs photoetching or the sputtering technology of ten multiple tracks, is that cost control or quality management all will face huge challenge.

On the other hand, for panchromaticization of the OLED technical matters of tradition " white light adds the optical filter mode ", because consist of the rgb pixels of full-color display luminous all come from the background White OLED luminous itself, no matter be which pixel all needs to cut luminous beyond this pixel luminous color, even so be most desirable situation, the luminescence efficiency that consists of an independent pixel of display be at the most background White OLED luminescent device efficient 1/3rd.Therefore people generally believe that there is the low problem of luminescence efficiency in panchromaticization of the OLED technical matters structure of " white light adds the optical filter mode ".In addition, up to the present, in the research of relevant OLED luminescent material, compare with green luminescent material with redness, in the Blue OLED luminescent material, no matter be fluorescent material or phosphor material, all there are huge spread in its serviceable life and efficient, inferior position has also caused white light to add the inferior position that the optical filter technology is applied in the overall performance on the display on the blue light material performance, and this has further caused the application limitation of " white light adds the optical filter mode " full color OLED display technique.

Existing problem on these panchromaticization of OLED display techniques is recognized in the present invention just, proposes a kind of novel full color OLED and shows process structure and technology.Use technology of the present invention can active balance to consist of the difference of full color OLED display RGB different pixels, produce and have the good visual effect, high efficiency full color OLED displaying appliance.

Summary of the invention

The present invention is on the basis of the various technical barriers that traditional various making full color OLED display technology schemes of fully having analyzed and researched face, past various color change manner full color OLED manufacturing method of display device and technique are being developed and innovating, creationaryly provide a kind of full color OLED display that adopts polycomponent OLED luminescent device technology to make in conjunction with optical filtering technique, this full color OLED display has the advantages such as long-life, high-fineness, rate of good quality rate, large scale, is conducive to improve the display summation and makes cost performance.

According to technical scheme provided by the invention: the full color OLED display that polycomponent OLED luminescent device technology is made in conjunction with optical filtering technique comprises filter sheet base plate, OLED luminescent device and is used for the luminous driver element of driving OLED luminescent device; Described filter sheet base plate comprises transparency carrier, blue color filter rete, black matrix" grid rete, green color filter rete and Red lightscreening plate rete, blue color filter rete, green color filter rete and Red lightscreening plate rete cover transparency carrier, and black matrix" grid rete is arranged between the optical filter rete of these three kinds of colors; Each optical filter rete all has an OLED luminescent device corresponding with it, and the structure of all OLED luminescent devices is identical, it is characterized in that: comprise in the electroluminescent luminescent spectrum that described OLED luminescent device produces in the energising situation at least two group CIE chromaticity coordinates Y values less than 0.55 blue-light-emitting component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component and CIE chromaticity coordinates Y value greater than 0.55 green luminescent component.

Among the present invention, as preferably, described at least two group blue-light-emitting components are CIE chromaticity coordinates Y value less than 0.25 mazarine earth complex luminescent component.

Among the present invention, as preferably, comprise in the described at least two group blue-light-emitting components at least one group of CIE chromaticity coordinates Y value less than 0.25 mazarine earth complex luminescent component and at least one group of CIE chromaticity coordinates Y value greater than 0.25, the light blue earth complex luminescent component less than 0.55.

Among the present invention, as preferably, also include the white pixel zone in the described filter sheet base plate, also be provided with black matrix" grid rete between the optical filter rete of described white pixel zone and other colors, an OLED luminescent device corresponding with it is also arranged on described white pixel zone.

Among the present invention, described OLED luminescent device comprises anode, the combination of organic luminescence function film layer and negative electrode, the combination of organic luminescence function film layer is at least one deck, it is arranged between anode and the negative electrode, described anode and negative electrode can be reflection electrode layer or transparency conductive electrode layer, and described organic luminescence function film layer combination comprises luminescent layer at least.

Among the present invention, the structural form of described OLED luminescent device adopts rhythmo structure (also being known as serial structure) form, specifically, described OLED luminescent device is the rhythmo structure that includes plural organic luminescence function film layer combination, be to be provided with the combination of many group organic luminescence function film layer between the anode of OLED luminescent device and the negative electrode, isolate by charge generating layer (also being called charge separating) between the adjacent organic luminescence function film layer combination.

Lamination OLED luminescent device is compared with single device OLED luminescent device, under electric field action under the same current density driving, double photon number can be discharged, thereby higher internal quantum can be produced, can be referring to Chinese patent CN1447629 about the detailed construction of lamination OLED luminescent device.

Among the present invention, the structure of concrete applicable lamination OLED luminescent device is listed below:

(1) anode/first organic luminescence function film layer combination/charge generating layer/second organic luminescence function film layer combination/negative electrode;

(2) anode/the first organic luminescence function film layer combination the/the first charge generating layer/the second organic luminescence function film layer combination the/the second charge generating layer/the 3rd organic luminescence function film layer combination/negative electrode;

(3) anode/first organic luminescence function film layer combination the/the first charge generating layer/second organic luminescence function film layer combination the/the second charge generating layer/... N organic luminescence function film layer combination/negative electrode.

In order to comprise at least two group blue-light-emitting components, emitting red light component and green luminescent component in the luminescent spectrum that makes lamination OLED luminescent device, the object luminescent material of different color can be dispersed in the different organic luminescence function film layer combinations, finally make the OLED luminescent device that meets the demands.

Among the present invention, as preferably, comprise the first blue-light-emitting component, the second blue-light-emitting component, emitting red light component and green luminescent component in the luminescent spectrum of described lamination OLED luminescent device, described lamination OLED luminescent device comprises two groups of organic luminescence function film layer combinations and one group of charge generating layer, and the structure of the lamination OLED luminescent device that can meet the demands has following several structure:

(1) the blue organic luminescence function film layer of anode/first combination/charge generating layer/second blueness, redness and green organic luminescence function film layer combination/negative electrode;

(2) blue and green organic luminescence function rete combination/charge generating layer/second blueness and the red organic luminescence function film layer combination/negative electrode of anode/first;

(3) blue and red organic luminescence function film layer combination/charge generating layer/second blueness and the green organic luminescence function film layer combination/negative electrode of anode/first;

(4) the blue organic luminescence function film layer of anode/second combination/charge generating layer/first blueness, green and red organic luminescence function film layer combination/negative electrode;

(5) blue and green organic luminescence function film layer combination/charge generating layer/first blueness and the red organic luminescence function film layer combination/negative electrode of anode/second;

(6) blue and red organic luminescence function film layer combination/charge generating layer/first blueness and the green organic luminescence function film layer combination/negative electrode of anode/second;

(7) blue and second blue organic luminescence function film layer combination/charge generating layer/green and red organic luminescence function film layer combination/negative electrode of anode/first;

(8) blue and the second blue organic luminescence function film layer combination/negative electrode of anode/green and red organic luminescence function film layer combination/charge generating layer/first;

In above-mentioned each organic luminescence function film layer combination, for the organic luminescence function film layer combination that only produces a kind of color earth complex luminescent component, its luminescent layer is to be mixed by a kind of object luminescent material to make rete consist of among material of main part.Produce the organic luminescence function film layer combination of at least two kinds of color earth complex luminescent component for needs, the version of its luminescent layer can adopt following two kinds: a kind of is that different object luminescent materials is mixed separately among material of main part separately, make respectively rete, then all rete stacks are consisted of luminescent layer.Another kind be with different object luminescent material blendings among the same material of main part, make rete, this rete is luminescent layer; In the luminescent layer of this version, can regulate by the doping content of regulating different object luminescent materials the intensity of each earth complex luminescent component.

Among the present invention, as preferably, object luminescent material for generation of the mazarine earth complex luminescent component adopts fluorescent material, adopt phosphor material for generation of the object luminescent material of light blue earth complex luminescent component, also adopt phosphor material for generation of the object luminescent material of emitting red light component and green luminescent component.

In the lamination OLED of above-mentioned three kinds of structures luminescent device, the material of described charge generating layer is selected from one or more the potpourri in following structural 1 material, structural formula 2 materials, and described structural formula is:

In the lamination OLED luminescent device of above-mentioned several structures, the combination of the organic luminescence function film layer of different color also can select to be produced on front portion or the rear portion of charge generating layer as required.Preferably, mazarine and the combination of red organic luminescence function film layer are positioned at a side of charge generating layer, and light blue and green organic luminescence function film layer combination is positioned at the opposite side of charge generating layer.

In the lamination OLED luminescence display structure of above-mentioned several structures, be provided with the insulating layer material material between the electrode of the OLED luminescent device of neighbor.

Among the present invention, having a kind of material in the object luminescent material in the described OLED luminescent device at least is the organic phosphorescent material that contains iridium, nail, platinum, rhenium and palladium metal, preferably, mazarine is luminous to be produced by fluorescent material, and light blue luminous and emitting red light is produced by phosphor material.And a kind of in light blue phosphor material and green or the red phosphorescence material or two kinds preferably are doped among the commaterial, and perhaps the stack of one or both in mazarine luminescent material and green or the red illuminating material consists of an OLED luminescent device combination.

The driver element of four wave band optical filtering technique full color OLED displays of the present invention can adopt passive type to drive two kinds of (PM driving) and active drivings (AM driving), when adopting passive type to drive, the driving circuit of display comprises the IC control chip, the OLED luminescent device need to be kept apart mutually by dissimilar insulation insulated columns, and formation can be luminous by the pixel that pulsed drive is independently controlled; When adopting active driving, the driving circuit of display comprises film crystal tube loop and IC control chip, and the film crystal tube loop needs to be connected with the OLED luminescent device electrode to connect at least, and it is luminous to consist of the OLED luminescent device with switch form control.

The full color OLED display device structure that polycomponent OLED luminescent device technology of the present invention is made in conjunction with optical filtering technique not only can adopt the luminous version in the end, also can adopt the luminous version in top simultaneously.

Among the present invention, as preferably, after the optical filter rete of various colors completes, can be as required, optionally make the planarization rete be adjacent on the optical filter rete, the purpose of this planarization rete is smooth optical filter rete, below the micronic dust that front road manufacturing procedure can also be produced at the optical filter film surface simultaneously and photoetching residue effectively cover, reduce the generation of rat, thereby lay a solid foundation for next procedure.

In addition, on above-mentioned planarization rete the protective seam that is adjacent can also be set, the purpose of this protective seam is to prevent that a small amount of steam that comprises in each rete on the filter sheet base plate from entering the OLED luminescent device, avoids the OLED luminescent device deteriorated.

Polycomponent OLED luminescent device technology of the present invention is as follows in conjunction with the principle of luminosity of the panchromaticization demonstration of the full color OLED display of optical filtering technique making:

Formation polycomponent OLED luminescent device technology is to mix the rear blue color filter rete acquisition of passing through by the many groups blue-light-emitting component in the OLED luminescent device in conjunction with the blue-light-emitting component of the full color OLED display that optical filtering technique is made.The electroluminescence of OLED luminescent device is when passing through the blue color filter rete, green in its spectrum and emitting red light component will be stopped by the blue color filter rete, can not by the direct projection of blue color filter rete in air, only can observe pure blue-light-emitting from the lip-deep blue pixel area of transparency carrier.

Formation polycomponent OLED luminescent device technology is to be obtained by the green color filter rete by the green luminescent component in the OLED luminescent device in conjunction with the green luminescent component of the full color OLED display that optical filtering technique is made.The electroluminescence of OLED luminescent device is when passing through the green color filter rete, blueness in its spectrum and emitting red light component will be stopped by the green color filter rete, can not by the direct projection of green color filter rete in air, only can observe pure green emitting from the lip-deep green pixel of transparency carrier zone.

Formation polycomponent OLED luminescent device technology is to be obtained by the Red lightscreening plate rete by the emitting red light component in the OLED luminescent device in conjunction with the emitting red light component of the full color OLED display that optical filtering technique is made.The electroluminescence of OLED luminescent device is when passing through the Red lightscreening plate rete, blueness in its spectrum and green luminescent component will be stopped by the Red lightscreening plate rete, can not by the direct projection of Red lightscreening plate rete in air, only can observe pure emitting red light from the lip-deep red pixel area of transparency carrier.

Further under the control of control loop, different pixels is selected electroluminescence luminous or that produce varying strength as requested, thereby is combined into natural various color for above-mentioned emitting red light component, green luminescent component and blue-light-emitting component.When for example display will show the ethereal blue color, control loop control Red lightscreening plate rete and the corresponding OLED luminescent device of green color filter rete are not luminous, only have the corresponding OLED luminescent device of blue color filter rete luminous, namely only produce the blue-light-emitting component; In the time of performance white, control loop control Red lightscreening plate rete, green color filter rete and the corresponding OLED luminescent device of blue color filter rete are simultaneously luminous, namely produce simultaneously emitting red light component, green luminescent component and blue-light-emitting component, mix the formation white light; When performance is yellow, control loop control Red lightscreening plate rete and the corresponding OLED luminescent device of green color filter rete are simultaneously luminous, namely produce simultaneously emitting red light component and green luminescent component, and control the relative intensity of two kinds of earth complex luminescent component, it is yellowish to mix generation, perhaps orange expression effect.

In the full color OLED display of polycomponent OLED luminescent device technology of the present invention in conjunction with the optical filtering technique making, on the described transparency carrier except Red lightscreening plate rete, green color filter rete and blue color filter rete are set, also be provided with the white pixel zone, described white pixel zone is can be directly vacant or arrange and have the material of certain transmittance, as long as can guarantee from the only white that appears in white pixel zone.

For the full color OLED display of the polycomponent OLED luminescent device technology with three kinds of optical filter retes and white pixel zone in conjunction with the optical filtering technique making, its color representation principle can be described as: in the time of needs performance ethereal blue color, control loop control Red lightscreening plate rete, green color filter rete and the regional corresponding OLED luminescent device of white pixel are not luminous, only have the corresponding OLED luminescent device of blue color filter rete luminous, namely only produce the blue-light-emitting component; In the time of performance white, control loop is controlled Red lightscreening plate rete, green color filter rete, the corresponding OLED luminescent device of blue color filter rete is not luminous or the while is slightly luminous, and the corresponding OLED luminescent device in white pixel zone is then selected directly luminous simultaneously; When showing yellow effect, control loop is controlled the Red lightscreening plate rete, the corresponding OLED luminescent device in white pixel zone is simultaneously luminous, adjusts simultaneously its light intensity to relatively reasonable intensity, and the mixed light of two kinds of pixels just can be realized the effect of gold-tinted; When showing in addition the gold-tinted effect, also can be according to the principle of luminosity of above-mentioned red green blue tricolor pixel, simultaneously luminous by control loop control Red lightscreening plate rete and the corresponding OLED luminescent device of green color filter rete, namely produce simultaneously emitting red light component and green luminescent component, and control the relative intensity of two kinds of earth complex luminescent component, it is yellowish to mix generation, perhaps orange expression effect.

For the full color OLED display with three kinds of optical filter retes and white pixel zone, it drives the loop and the portrait treatment technology adopts the full color OLED display of three kinds of color filter retes of RGB more complicated than only, but display itself is because many luminous existence of white pixel, and efficient is higher.

The standby design feature of full color OLED displaying appliance that polycomponent OLED luminescent device technology of the present invention is made in conjunction with optical filtering technique, do not affect its collocation or make up known display fabrication process technology, for example, in order to improve the contrast of display, the polaroid material of then further fitting on the surface of display; In order to improve display brightness, in display surface applying brightness enhancement film etc.; In addition, can also become the Pentile array mode to the Pixel Design that consists of the OLED display, perhaps as required, the size of adjusting the pixel of different color is non-equal equidimension, perhaps Pixel Design is become " product " font, or four pixels structural form of square arrangement up and down; In addition, if the OLED display that AM drives, its type of drive can be LTPS-TFT, perhaps α-TFT, or metal oxide TFT etc.In a word, technology disclosed in this invention can be compatible and utilizes the known display technology to make high performance OLED to show product.

The present invention compared with prior art, advantage is: the OLED luminescent device of the present invention's four wave band full color OLED displays has comprised many groups blue-light-emitting component, emitting red light component and green luminescent component, its performance advantage may be embodied in following several aspect: (1), because the OLED device is the device of simple a kind of structure, avoided use precision metallic cover technique of counterpoint from process structure, thus the difficulty of the vacuum evaporation process when greatly reducing the making of OLED luminescent device; Because filter sheet base plate technique has high degree of ripeness, be conducive to improve fineness and the yields of full color OLED display simultaneously.(2), the blue light emitting in the OLED luminescent device comprise two groups blue coloured electroluminous, increased the light quantity subnumber of blue-light-emitting component, thereby improved the efficient of blue-light-emitting pixel, be conducive to obtain high color purity, long-life blue-light-emitting, remedy with evaded current various color luminescent material in the relative performance inferior position that falls behind of blue light material, and then balance the important indicators such as the luminescence efficiency of full color OLED display different pixels, excitation, life-span, the performance that improves whole full color OLED display is had positive effect.(3), the various ingredients that comprises emitting red light component, green luminescent component and blue-light-emitting component in the luminescent spectrum of OLED luminescent device, the electroluminescence of OLED luminescent device is by each optical filter rete the time, each pixel can obtain good balance and obtain good efficient, and this has positive role for the good luminous efficient and the excitation that obtain display.In addition, the positive effect that the present invention possesses has focused on having simplified standard the display manufacture craft, and the manufacturing means are simple, easy operating.

Description of drawings

Fig. 1 is polycomponent OLED luminescent device technology is removed driver element in conjunction with the full color OLED display of optical filtering technique making the first structural representation.

Fig. 2 is polycomponent OLED luminescent device technology is removed driver element in conjunction with the full color OLED display of optical filtering technique making the second structural representation.

Fig. 3 is that OLED luminescent device spectrum formation synoptic diagram exemplifies among the embodiment 1.

Fig. 4 is that the transmitance synoptic diagram of each the optical filter rete among the embodiment 1 exemplifies.

Fig. 5 is the another kind of arrangement mode synoptic diagram of four kinds of optical filter retes in the embodiment of the invention 2.

Embodiment

The invention will be further described below in conjunction with concrete drawings and Examples.

Embodiment 1

The first structural representation of the full color OLED display that polycomponent OLED luminescent device technology that shown in Figure 1 is is made in conjunction with optical filtering technique, it is mainly by filter sheet base plate, OLED luminescent device be used for the luminous driver element of driving OLED luminescent device and form; Described filter sheet base plate comprises transparency carrier 1, blue color filter rete 2, black matrix" grid rete 3, green color filter rete 4 and Red lightscreening plate rete 5, blue color filter rete 2, green color filter rete 4 and Red lightscreening plate rete 5 cover on the transparency carrier 1, and black matrix" grid rete 3 is arranged between the optical filter rete of these three kinds of colors; Each optical filter rete all has an OLED luminescent device corresponding with it, and the structure of all OLED luminescent devices is identical, and its innovative point is: comprise in the electroluminescent luminescent spectrum that described OLED luminescent device produces in the energising situation two groups of CIE chromaticity coordinates Y values less than 0.55 blue-light-emitting component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component and CIE chromaticity coordinates Y value greater than 0.55 green luminescent component.

In the present embodiment 1, described blue-light-emitting component is that two components consist of, wherein one group of blue-light-emitting component is CIE chromaticity coordinates Y value less than 0.25 mazarine earth complex luminescent component, another group blue-light-emitting component is that CIE chromaticity coordinates Y value is greater than 0.25, light blue earth complex luminescent component less than 0.55, the luminescent spectrum of this OLED luminescent device consists of as shown in Figure 3, among Fig. 3, mazarine earth complex luminescent component and light blue earth complex luminescent component are mixed stack, jointly form the larger blue-light-emitting component of intensity.In addition, also include abundant green luminescent component and emitting red light component in the luminescent spectrum of this OLED luminescent device.

In the present embodiment 1, the material of described transparency carrier 1 can adopt existing conventional material, such as glass or polymeric material, wherein polymeric material can be selected cellulose esters, polyamide, polycarbonate, polyester, polystyrene, polyolefin, polysulfones, polyethersulfone, polyetherketone, polyetherimide, polyoxyethylene, norbornene resin etc.When using polymeric material, transparency carrier 1 can be rigidity or flexibility.

In the present embodiment 1, the visible light transmittance rate of described transparency carrier 1 is at least more than 80%, preferably is at least 86% above level.

Be covered in the material of Red lightscreening plate rete 5, green color filter rete 4, blue color filter rete 2 and black matrix" grid rete 3 on the transparency carrier 1 and material and the manufacture craft that manufacture craft can be consulted and used the optical filter rete on the conventional liquid crystal, this class material normally consists of deciding Pigments in photoresist, the material of different qualities optical filter rete normally adopts conventional photolithographicallpatterned to be made, concrete core process comprise film, expose, the contents such as development, curing.Except photolithographicallpatterned, each rete can also use printing, letterpress, and the techniques such as offset printing are made.

Shown in Figure 4 is the optical transmission spectra figure of Red lightscreening plate rete 5, green color filter rete 4 and blue color filter rete 2 in the present embodiment 1.

The planarization rete 6 of certain thickness can be set between OLED luminescent device of the present invention and each the optical filter rete as required.This planarization rete 6 is covered on each optical filter rete comprehensively, is used for covering the defective on the above-mentioned various difference in functionality rete, prevents and eliminate the short circuit of the OLED display that these defectives may cause.Planarization rete 6 can adopt the monolayer material structure, perhaps is made of with stepped construction multiple material.The material that is used to form planarization rete 6 comprises imide-modified organic siliconresin; Inorganic metal compound (TiO for example, Al ₂O ₃, SiO ₂); The material of the dispersion that forms in acrylic resin, polyimide resin, the organic siliconresin etc.; Contain the acrylate monomer of active ethylene group/oligomer/polymer resin; The photoresist resin; Fluorine resin; Photo curable resin and/or thermoset resin are such as epoxy resin, epoxide modified acryl resin etc.The method of processing these materials formation planarization retes 6 is not particularly limited, and can pass through conventional method, carries out this operation such as dry method (such as sputter, vapour deposition, CVD etc.) and wet method (spin coating, roller coat, cast, photoetching etc.).

In addition, on the planarization rete 6 of OLED luminescent device protective seam can also be set further among the present invention.This protective seam can prevent effectively that block, lower-molecular-weight component and moisture ooze out, and affect the illumination effect of OLED luminescent device from following planarization rete 6 and each optical filter rete.Can adopt as the material that protective seam uses: (1) metal oxide, for example SiO _X, AlO _X, TiO _X, TaO, ZnO _XDeng; (2) metal nitride, for example SiN _XDeng; (3) metal oxynitride compound, for example SiN _XO _YDeng; (4) organic/inorganic multilayer film mixed structure.

In the embodiment of the invention, the structural form of described OLED luminescent device adopts the rhythmo structure form, it is mainly by anode, organic luminescence function film layer combination 8, charge generating layer 11 and negative electrode consist of, organic luminescence function film layer combination 8 has two groups, isolate by charge generating layer 11 between the adjacent organic luminescence function film layer combination 8, all organic luminescence function film layer combinations 8 are arranged between anode and the negative electrode, described anode and negative electrode can be reflection electrode layer 9 or transparency conductive electrode layer 7, described two groups of organic luminescence function film layer combination 8 comprises luminescent layer at least, wherein the luminescent layer in one group of organic luminescence function film layer combination 8 is mazarine and green light emitting layer, and the luminescent layer in another group organic luminescence function film layer combination 8 is light blue and red light emitting layer.

The lamination OLED luminescent device that the present invention adopts is compared with single device OLED luminescent device, under the electric field action, can discharge double photon number, thereby can produce higher photo-quantum efficiency under same current density drives.

(1) anode/the first organic luminescence function film layer combination/charge generating layer 11/ second organic luminescence function film layer combination/negative electrode;

(2) anode/the first organic luminescence function film layer combination the/the first charge generating layer 11/ second organic luminescence function film layer combination the/the second charge generating layer 11/ the 3rd organic luminescence function film layer combination/negative electrode;

(3) anode/the first organic luminescence function film layer combination the/the first charge generating layer 11/ second organic luminescence function film layer combination the/the second charge generating layer 11/ ... N organic luminescence function film layer makes up 8/ negative electrode.

Among the present invention, described each organic luminescence function film layer makes up in 8 except comprising the luminescent layer, hole injection layer, hole transmission layer, electron injecting layer, electron transfer layer, charge generating layer 11 etc. can also optionally be set, and the material of above-mentioned each layer can adopt the known spendable all material of making OLED luminescent device or the following material that is expected to develop.Can use the methods such as any job operation known in the association area such as vacuum evaporation, spin coating, printing, vapour deposition to make the OLED luminescent device.

The adoptable material of each component part of full color OLED display that the below makes in conjunction with optical filtering technique polycomponent OLED luminescent device technology of the present invention describes:

Among the present invention, the material that is used for making transparency conductive electrode layer 7 comprises: ITO, aluminium oxide, indium oxide, IZO, zinc paste, zinc-aluminum oxide, zinc-gallium oxide, or the transparent conductive metal oxide that has added the adulterant of F or Sb and so in the above-mentioned oxide forms.Described transparency conductive electrode layer 7 can be made by vapour deposition, sputter or chemical vapor deposition (CVD) mode, preferably makes by the sputter mode.

Among the present invention, the material that is used for making hole hole injection layer, hole-transporting layer can be selected arbitrarily Available Material commonly known in the art.Specifically can list phthalocyanine derivates, triazole derivative, triarylmethane derivatives, triarylamine derivatives oxazole derivative oxadiazole derivative, hydazone derivative, stilbene derivatives, the pyridinoline derivant, the polysilane derivant, imdazole derivatives, phenylenediamine derivative, the amino Kui Er ketone derivatives that replaces, the styryl anthracene derivant, the distyryl compounds such as styryl amine derivative, the Cong derivant, the silazane derivant, the phenyl amines multipolymer, porphyrin compound, carbazole derivates, the polyaryl alkane derivatives, polyphenylene ethylene and derivant thereof, polythiophene and derivant thereof, the poly-N-vinyl carbazole derivates, the electroconductive polymer oligomers such as thiophene oligomers, aromatic uncle amine compound, the styrylamine compound, three amines, tetraamine, diphenyl amine, the propine diamine derivative, the p-phenylene diamine derivative, the m-phenylene diamine derivant, 1,1 '-two (4-ammonia diaryl base phenyl) cyclohexane, 4,4 '-two (diarylamines) biphenyl class, two (4-(ammonia diaryl base) phenyl) methane class, 4; 4 "-two (ammonia diaryl base) Terphenyls, 4; 4 " '-two (ammonia diaryl base) quaterphenyl class, 4,4 '-two (ammonia diaryl base) diphenylether, 4,4 '-two (ammonia diaryl base) diphenyl sulfane class, two (4-(ammonia diaryl base) phenyl) dimethyl methyl alkanes, two (4-(ammonia diaryl base) phenyl)-two (trifluoromethyl) methane class, 2,2-diphenylethylene compound etc.Described triarylamine derivatives, can list 2 times of bodies of triphenylamine, 3 times of bodies, 4 times of bodies and 5 times of bodies, 4,4 '-two (N-phenyl-N-(4 "-aminomethyl phenyl) amino) biphenyl; 4; 4 '-two (N-phenyl-N-(3 "-aminomethyl phenyl) amino) biphenyl, 4,4 '-two (N-phenyl-N-(3 "-methoxyphenyl) amino) biphenyl, N, N '-diphenyl-N; N '-two (1-naphthyl) (1; 1 '-biphenyl)-4,4 '-diamines (NPB), 4; 4 '-two (N-(4 '-(N "-(1-naphthyl)-N "-phenyl amino) xenyl)-the N-phenyl amino) biphenyl (NTPA); 3,3 '-dimethyl-4,4 '-two (N-phenyl-N-(3 "-aminomethyl phenyl) amino) biphenyl, 1,1-pair (4 '-(N, N-two (4 "-aminomethyl phenyl) amino) phenyl) cyclohexane, 9; 10-pair (N-(4 '-aminomethyl phenyl)-N-(4 "-n-butylphenyl) amino) phenanthrene, two (N, N-the diphenyl amino)-6-phenylphenanthridineands of 3,8-, 4-methyl-N, N-pair (4 ", 4 " '-two (N ', N "-two (4-aminomethyl phenyl) amino) biphenyl-4-yl) aniline; N; N '-two (4-(diphenyl amino) phenyl)-N, N '-diphenyl-1,3-diaminobenzene; 5; 5 "-two (two (4-aminomethyl phenyl) amino of 4-() phenyl)-2,2 ': 5 ', 2 '-many thiophene, 1,3,5-three (triphenyl is amino) basis, 4,4 '; 4 "-three (N-carbazole) triphenylamine, 4,4 '; 4 "-three (N-(3 " '-aminomethyl phenyl)-the N-phenyl amino) triphenylamine; 4,4 ', 4 "-three (N, N-two (4 " '-tert-butyl-phenyl-4 " "-yl) amino) triphenylamine; 1,3,5-three (N-(4 '-diphenyl amino phenyl)-N-phenyl amino) benzene etc.Described porphyrin compound can list such as porphyrin, 1,10,15,20-tetraphenyl-21H, 23H-porphyrin ketone (II), 1,10,15,20-tetraphenyl-21H, 23H-zinc porphyrin (II), 5,10,15,20-four (pentafluorophenyl group)-21H, 23H-porphyrin; As phthalocyanine derivates, can enumerate silicon phthalocyanine oxide, aluminium oxide phthalocyanine, metal-free phthalocyanine class, two lithium phthalocyanines, tetramethyl CuPc, CuPc, phthalocyanine chromium, Phthalocyanine Zinc, aluminum phthalocyanine, titanium dioxide phthalocyanine, magnesium phthalocyanine, prestox CuPc etc.Described aromatic uncle amine compound and styrylamine compound, can enumerate such as N, N, N ', N '-tetraphenyl-4,4 '-diaminobenzene, N, N '-diphenyl-N, N '-two-(3-aminomethyl phenyl)-(1,1 '-xenyl)-4,4 '-diamines, 2,2-pair (4-two-to the triamido phenyl) propane, 1,1-pair (4-two-to the triamido phenyl) cyclohexane, N, N, N ', N '-four p-methylphenyls-4-4 '-diaminobenzene, 1,1-pair (4-two-to the triamido phenyl)-the 4-phenyl-cyclohexane-, two (4-dimethylamino-2-aminomethyl phenyl) phenylmethane, two (4-di-p-tolyl aminophenyl) phenylmethane, N, N '-diphenyl-N, N '-two (4-methoxyphenyl)-4,4 '-benzidine, N, N, N ', N '-tetraphenyl-4,4 '-diamino-phenyl ether, 4,4 '-two (diphenyl amino) quaterphenyl, N, N, N-three (p-tolyl) amine, 4-(two-p-methylphenyl is amino)-4 '-(4(two-p-methylphenyl is amino) styryl) equal benzene divinyl, 4-N, N-diphenyl amino-2-diphenylacetylene benzene, 3-methoxyl-4 '-N, the equal benzene divinyl of N-diphenyl amino, N-phenyl carbazole etc.Wherein, preferred aryl groups-two (4-ammonia diaryl base phenyl) amine, the p-phenylene diamine derivative, 4,4 '-benzidine derivant, 4,4 '-diamino-diphenyl sulfane derivant, 4,4 '-diaminodiphenyl-methane derivant, 4,4 '-diamino-diphenyl ether derivant, 4,4 '-diaminodiphenyl-methane derivant, 4,4 '-diamino-diphenyl ether derivant, 4,4 '-diamido tetraphenylmethane derivant, 4, the equal benzene divinyl of 4 '-diamido derivant, 1,1-diaryl cyclohexanes class, 4; 4 " the many phenyl derivatives of-diamido, 5,10-two-(4-aminophenyl) anthracene derivant, 2, the 5-diaryl pyridines, 2,5-diaryl furans, 2,5-diaryl thiophene-based, 2,5-diaryl pyrrole class, 2,5-diaryl-1,3,4-oxadiazole class, the 4-(ammonia diaryl base) equal benzene divinyl class, 4,4 '-two (ammonia diaryl bases) are benzene divinyl class-N all, N-diaryl-4-(2, the 2-diphenylacetylene) phenyl amines, 2,5-diaryl-1,3, the 4-triazole type, 1,4-two (4-aminophenyl) naphthalene derivatives, 2, two (the ammonia diaryl base)-5-thioxanthene classes of 8-, 1,3-two (ammonia diaryl base) isoindoles etc., more preferably three (4-(N-(3-aminomethyl phenyl)-N-phenyl amino) phenyl) amine, three (4-(N-(2-naphthyl) N-phenyl amino) phenyl) amine etc.

In order to reduce the driving voltage of OLED luminescent device, improve the performance of OLED luminescent device, common way is to add electron accepter (P type dopant material) in the hole injection layer of OLED luminescent device, improves the charge carrier conduction.The P type dopant material that can be used as P type doping use comprises: (1) organic material, and such as 2,3,5,6-tetrafluoro-7,7', 8,8'-, four cyanogen dimethyl 1,4-benzoquinone (F4-TCNQ); (2) inorganic material, such as MoO3, V2O5, ReO3, Re2O7, FeCl3 and WO3 etc.

Luminous in order to make the OLED luminescent device can produce the polycomponent that comprises the blue-light-emitting component, the object luminescent material of different color can be dispersed in the luminescent layer of different organic luminescence function film layer combinations 8, finally be mixed into the OLED luminescent device electroluminescence with multiple earth complex luminescent component.

With regard to the object luminescent material, can list fluorescent material and phosphor material two large classes.The contrast fluorescent material, phosphor material can utilize singlet and triplet excitons simultaneously in luminescence process, and internal quantum efficiency can reach 100% in theory, thereby can greatly improve the luminescence efficiency of luminescent device.

In above-mentioned each organic luminescence function film layer combination 8, for the organic luminescence function film layer combination 8 that only produces a kind of color earth complex luminescent component, its luminescent layer is to be mixed by a kind of object luminescent material to make rete consist of among material of main part.Produce the organic luminescence function film layer combination 8 of at least two kinds of color earth complex luminescent component for needs, the version of its luminescent layer can adopt following two kinds: a kind of is that different object luminescent materials is mixed separately among material of main part separately, make respectively rete, then all rete stacks are consisted of luminescent layer.Another kind be with different object luminescent material blendings among the same material of main part, make rete, this rete is luminescent layer; In the luminescent layer of this version, can regulate by the doping content of regulating different object luminescent materials the intensity of each earth complex luminescent component.

Among the present invention, the material of main part that consists of the luminescent layer of above-mentioned OLED luminescent device not only needs to possess ambipolar charge transmission, need simultaneously to possess appropriate energy rank, the excitation energy because of electronics and hole-recombination generation effectively can be delivered to the object luminescent material.Such material comprises diphenylethyllene arylene derivatives, stibene derivant, carbazole derivates, triarylamine derivatives, anthracene derivant, pyrene derivatives, triphenylene, bends derivant, two (2-methyl-8-quinoline) (p-phenylphenol) aluminium (BAlq) etc.

In above-mentioned OLED luminescent device, described object luminescent material is simple fluorescent material, phosphor material or formed by different fluorescent materials and phosphor material matched combined, having a kind of material in the object luminescent material at least is to contain iridium, nail, platinum, the organic phosphorescent material of rhenium and palladium metal, among the present invention, object luminescent material for generation of the mazarine earth complex luminescent component preferably adopts fluorescent material, object luminescent material for generation of light blue earth complex luminescent component preferably adopts phosphor material, also preferably adopts phosphor material for generation of the object luminescent material of emitting red light component and green luminescent component.

In above-mentioned OLED luminescent device, as the blue fluorescent material for generation of blue-light-emitting, not only need to possess high fluorescent quantum luminescence efficiency, also need simultaneously to possess appropriate energy rank, luminous, the such material that can effectively absorb material of main part excitation energy is not particularly limited.For example, can list talan amine derivant, pyrene derivatives, derivant in the wrong, anthracene derivant, benzoxazole derivative, benzothiazole derivant, benzimidizole derivatives, derivant in the wrong, phenanthroline derivant, diphenylethyllene benzene derivative, tetraphenylbutadiene derivant etc.; Wherein can use 4,4 '-two (2-(9-ethyl carbazole-2-yl)-vinyl) biphenyl (BCzVBi), perylene etc.Also can list the quaterphenyl based compound, two phenyl based compounds, benzene imidazole compound benzoxazole based compound Ben Bing oxadiazole based compound, the styryl benzene compound, distyrene pyrazine based compound, the butadiene-based compound, the naphthalimide compound, the perillene based compound, the aldazine based compound, the cyclopentadiene based compound, pyrrolopyrrole formyl based compound, the styryl amine compound, coumarin series compounds, aromatic series dimethylbenzene theophylline based compound, be that material is as the metal complex of part with the 8-quinolinol, polyphenyl based compounds etc. are one or more combination separately; In these compound-materials, the implementation material that checking can list aromatic series dimethylbenzene theophylline based compound arranged, 4,4 '-two (2,2-two-1-butyl phenyl vinyl) two phenyl (are called for short: DTBPBBi), 4,4 '-two (2,2-diphenylacetylene) two phenyl (are called for short: DPVBi) etc. with their derivant.

In addition, can also enumerate and use phosphor material to be applied in the OLED luminescent device structure of the present invention, can possess as the material requirements that phosphorescent light body material uses higher triplet state energy rank, appropriate HOMO/LUMO energy rank and bipolar conduction, materials can list carbazoles derivant, compound in triazine class etc.

As the blue phosphorescent material, get final product so long as have the material of blue phosphorescent lighting function, be not particularly limited.Such as the metal complex that can select iridium, nail, platinum, rhenium, palladium etc., preferably, select that at least one has the complex of phenylpyridine skeleton, two pyridine skeleton, porphyrin skeleton in the ligand of above-mentioned metal complex.More particularly, can select two (4,6-difluorophenyl pyridine-N, C2 ')-and picoline iridium, three (2-(2,4-difluorophenyl) pyridine-N, C2 ') iridium, two (2-(3, the 5-trifluoromethyl) pyridine-N, C2 ')-picoline iridium, two (4,6-difluorophenyl pyridine-N, C2 ') diacetone iridium etc.

In addition, the Subjective and Objective material that produces blue-light-emitting in the above-mentioned OLED of the can be used for luminescent device also can adopt disclosed compound in following patent or the patented claim, and these patents or patented claim comprise: United States Patent (USP) or patented claim: US20080193797; US20080220285; US20090128009; US20090110957; US20100295444; US20110114889; US20110042655; US20110147716; US20110284799; US20120126180; US20120112169; US2012011216; US7846558; US8173275.Jap.P. or patented claim: JPA2007223904; JPA2008214332; JPA2008291271; JPA2008545630; JPA2009010181; JPA2009505995; JPA200954474; JPA2009542735; JPA2010238880; JPA2010241687; JPA201002776; JPA2011216640; JPA2012080093.International monopoly or patented claim: WOA12007032161; WOA12007032162.

In above-mentioned OLED luminescent device, can be used as the material of main part for generation of emitting red light, not only need to possess ambipolar charge transmission, need simultaneously to possess appropriate energy rank, the excitation energy because of electronics and hole-recombination generation effectively can be delivered to the object luminescent material.Such material can list such as diphenylethyllene arylene derivatives, diphenylethyllene benzene derivative, talan amine derivative, hydroxyquinoline metal complex, triarylamine derivatives, oxadiazole derivative, oxygen oxadiazole derivative, two carbazole derivates, few thiophene derivant, 1-benzopyran derivatives, triazole derivative, benzoxazole derivative, benzothiazole derivant etc., can list three (oxine) aluminium (Alq), DPVBi etc. more specifically.

In above-mentioned OLED luminescent device, as the red fluorescence guest materials for generation of emitting red light, not only need to possess high fluorescent quantum luminescence efficiency, also need simultaneously to possess appropriate energy rank, it is luminous effectively to absorb material of main part excitation energy, such material can list europium complex, 1-benzopyran derivatives, Rhodamine Derivatives, the benzothioxanthene derivant, derivatives of porphyrin, oil red (oil red), 2-(1, the 1-dimethyl ethyl)-6-(2-(2,3,6,7-tetrahydrochysene-1,1,7,7-tetramethyl-1H, 5H-benzo (ij) quinoline-9-yl) vinyl)-4H-pyrans-4H-subunit) malononitrile (DCJTB), the 4-(dicyano methylene)-the p-dimethylamino styryl of 2-methyl-6-()-4H-pyrans (DCM) etc.

With respect to the fluorescence material of main part, the amount of fluorescence guest materials (incorporation) is preferably 0.01% ~ 20%(weight), more preferably be 0.1% ~ 10%(weight).When using the blue-fluorescence guest materials, with respect to the fluorescence material of main part, the amount of blue-fluorescence guest materials is preferably 0.1% ~ 20%(weight).Only in this scope, can make that to produce effective energy distribution between high-octane blue-light-emitting material and the low-energy emitting red light material gentle, can access the balance each other electroluminescence of intensity of the blue and emitting red light of possessing of expectation.

As the red phosphorescent guest materials, get final product so long as have the material of red phosphorescent lighting function, be not particularly limited.Such as the metal complex that can enumerate iridium, nail, platinum, rhenium, palladium etc., preferably, select that at least one has the complex of phenylpyridine skeleton, two pyridine skeleton, porphyrin skeleton etc. in the ligand of above-mentioned metal complex.More particularly, can select two (2-(2 '-benzo (4,5-α) thienyl) pyridine-N, C3 ') diacetone iridium (btp2Ir (acac)), 2,3,7,8,12,13,17,18-octaethyl-12H, 23H-porphyrin-platinum (II), two (2-(2 '-benzo (4,5-α) thienyl) pyridine-N, C3 ') iridium, two (2-phenylpyridine) diacetone iridium.

In addition, the phosphorescence Subjective and Objective luminescent material in the above-mentioned OLED of the can be used for luminescent device also can adopt disclosed compound in following patent or the patented claim, and these patents or patented claim comprise: the U.S.: US20050227109; US20070048546; US20070104979; US20070104980; US20080203360; US20080297033; US20090108736; US20090140639; US20090030202; US20100133524; US20090104472; US20090309487; US20100141125; US20100102714; US20100148663; US20100163853; US20110108827; US20110057559; US20100044689; US20110278555; US20110108822; US20110284799; US2011227049; US20110108823; US20110057559; US20110266528; US8039127; US8071226.Japan: JPA2007254737; JPA2007284432; JPA2007314792; JPA2008160098; JPA2008160098; JPA2008270770; JPA2008542203; JPA2008179607; JPA2008147351; JPA2008147354; JPA2008147398; JPA2008147353; JPA2009526071; JPA2009187956; JPA2009099783; JPA2009016693; JPA2009534846; JPA2009267257; JPA2009544743; JPA2009539768; JPA2009088538; JPA2010161071; JPA2010161357; JPA2010520882; JPA2011098958; JPA2011121877; JPA2012512166; JPA2012046479; JPA2012046492.International: WOA12009008100; WOA12007111176; WOA12009102054; WOA12009008100; Germany: DE102009053836; Taiwan: TW201105637.

In the above-mentioned OLED luminescent device, be used for making the material of electron injecting layer can be in the material that possesses electron transport property OLED any choice for use.Such material can list two (5 '-(to tert-butyl-phenyl)-1,3 such as 1,3-, 4-oxadiazole-2 '-yl) benzene, the 2-(4-xenyl)-the 5-(4-tert-butyl-phenyl)-1,3, the oxadiazole derivatives such as 4-oxadiazole, 3-(4 ' tert-butyl-phenyl)-4-phenyl-5-(4 "-biphenyl)-1,2; the triazole derivatives such as 4-triazole; three harness derivants, quinoline, quinoxaline derivatices; two quinone derivatives; nitro replaces the Cong ketone derivatives, thiapyran dioxide derivative, anthraquinone bismethane derivant; thiapyran dioxide derivative; the heterocyclic tetraacid acid anhydrides such as naphthalene base perylene, carbodiimides, Cong are pitched methane Derivatives, anthraquinone bismethane derivant, anthracyclinone derivatives, diphenylethyllene pyrazines derivatives, Silole derivant, the phenanthroline derivant, imidazopyridine derivatives etc.In addition, can also enumerate two (10-benzo (h) hydroxyquinoline) berylliums, the beryllium salt of 5-hydroxyl brass, the organometallic complexs such as aluminium salt of 5-hydroxyl brass, the metal complex of oxine or derivatives thereof, such as three (oxine) aluminium (Alq), three (5,7-dichloro-8-hydroxyquinoline) aluminium, two (2-methyl-oxine) (p-phenylphenol) aluminium (BAlq), three (5,7-D-Br-8-HQ) aluminium.The metal-chelating immunomodulator compounds that contains sequestrant of the hydroxyquinoline metal complexs such as the plant hormones such as three (2-methyl-oxine) aluminium (generally speaking being oxine) etc.In addition, the central metal that can also enumerate these metal complexs is replaced by metal complex of beryllium, indium, magnesium, copper, calcium, tin, zinc or aluminium etc.Preferably use without metal or metal phthalocyanine, or their end is replaced into the material of alkyl, sulfo group etc.Wherein, more preferably use 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 3-phenyl-4-(1 '-naphthalene)-5-phenyl-1,2,4-triazole (TAZ).

Some inorganic metallic compound materials also can be used as the materials'use of OLED luminescent device electron injecting layer, for example can list LiF, CsF, Cs2CO3, LiN, the materials such as Cs3N.

In order to make the OLED luminescent device obtain the low voltage drive effect, the electronic injection transport layer of OLED luminescent device also can adopt the structural form of N-type doping usually, and the material that can be used as N-type doping use can list the metal material of low working function; such as Li, Cs, K; Yb etc.; also can enumerate some metal material oxides, fluoride, or nitride etc.; such as Li2O; CsF, Li3N, CsN etc.

In the above-mentioned OLED luminescent device, the material that is used for making reflection electrode layer 9 can be selected: the composite material of high reflecting metal monomer (such as Al, Ag, Mg, Ca, Mo, W, Ni, Cr) etc. or these materials, also can list some amorphous alloys (for example NiP, NiB, CrP, CrB) or microcrystallizing alloy (for example NiAl), reflecting electrode can be by dry method such as vacuum evaporation, and vapour deposition or sputter form.The reflectivity of described reflecting electrode preferably is at least 50%, more preferably is at least 80%.

In the above-mentioned OLED luminescent device, the material of described charge generating layer 11 is selected from one or more the potpourri in following structural 1 material, structural formula 2 materials, and described structural formula is:

The material of charge generating layer 11 also can choice for use P type, the electronics of n type material doping device or hole material consist of.The lamination OLED luminescent device of the charge generating layer 11 that consists of as P type and N-type doped forms, its manufacture craft can be referring to doping and the low-voltage technology mode of hole injection layer and electron injecting layer in the aforementioned OLED device making technics.

Embodiment 2

Shown in Figure 2 is that polycomponent OLED luminescent device technology is in conjunction with the second structural representation of the full color OLED display of optical filtering technique making, the difference of itself and embodiment is: in the described filter sheet base plate except comprising Red lightscreening plate rete 5, green color filter rete 4 and blue color filter rete 2, also include the white pixel zone 10 that to send white light, also be provided with black matrix" grid rete 3 between the optical filter rete of described white pixel zone 10 and other colors, also there is an OLED luminescent device corresponding with it in described white pixel zone 10.

Described Red lightscreening plate rete 5, green color filter rete 4, blue color filter rete 2 and white pixel zone 10 are except arranging according to strip shown in Figure 2, can also arrange (shown in Figure 5) according to the stack of square shape, the variation of this arrangement mode is for the full color OLED display, the selectivity that only is color change rete processes is different, does not consist of impact for the display performance of full color OLED display.

Make embodiment 1

The following process for making that specifically describes full color OLED display of the present invention according to structure shown in Figure 1.

(1) form of employing consigned processing, obtain to include the filter sheet base plate of Red lightscreening plate rete 5, green color filter rete 4, blue color filter rete 2 and black matrix" grid rete 3 from China Projection Tube Co., Ltd (general headquarters are in Taiwan), its specification is 2.4 cun QVGA specifications, wherein the thickness of Red lightscreening plate rete 5 is 3 microns, the thickness of green color filter rete 4 is 3 microns, the thickness of blue color filter rete 2 is 3 microns, and the transmitance of above-mentioned different color optical filter rete as shown in Figure 4.

(2) on above-mentioned filter sheet base plate, adopt lithography process technique, further smear and the thickness that completes is 2 microns planarization rete 6 at each optical filter film surface, planarization rete 6 employed materials are that the model that Japanese JSR Corp. produces is the transparent photomask glue material of NN810L.

(3) after finishing above-mentioned planarization rete 6 making, further pass through CVD thin film-forming method, the SiN protective seam of 1 micron thickness that completed at planarization rete 6.

(4) on above-mentioned SiN protective seam, made the ITO transparency conductive electrode layer 7 of 220nm thickness by the sputter mode, its membrane impedance is 9 ohm/; Subsequently ITO transparency conductive electrode layer 7 has been carried out the pattern picture processes, and the ITO pattern making anode insulated column and the cathode insulated column that are machining, its Anodic insulated column is trapezium structure, and cathode insulated column is inverted trapezoidal structure, has made like this ito substrate.The photoetching process that the job operation of the pattern picture harmonizing yinyang utmost point insulated column of all ITO has adopted traditional liquid crystal panel to make equally.It is the photoresist material of ZPN1168 that the photoresist material that anode insulated column and cathode insulated column adopt is the model that Japanese ZEON Co., Ltd. produces.

(5) make the OLED luminescent device at ito substrate, ito substrate need to carry out pre-treatment, and pre-treating technology is: 10 ^-3Under the following vacuum condition of pa, 200 ℃ of lower heating 30 minutes, 200 ℃ of lower UVs cleaned 3 minutes.

Described OLED luminescent device is rhythmo structure, the material that uses and concrete structure as follows:

Transparency conductive electrode layer 7(thickness: 220nm; Material: ITO)/hole injection layer (thickness: 40nm; Material: structural formula 3 materials)/hole transmission layer (thickness: 20nm; Material: structural formula 4 materials)/mazarine and green light emitting layer (thickness: 30nm; Material: structural formula 5 materials, structural formula 6 materials and structural formula 7 materials consist of according to the weight proportion blending of 5.5:0.5:94)/electron transfer layer (thickness: 20nm; Material: structural formula 8 materials)/electron injecting layer (thickness: 2nm; Material: Li ₃N)/charge generating layer 11(thickness: 10nm; Material: structural formula 1 material)/hole transmission layer (thickness: 20nm; Material: structural formula 4 materials)/light blue and red light emitting layer (thickness: 30nm; Material: structural formula 9 materials, structural formula 10 materials, structural formula 11 materials consist of according to the weight proportion blending of 12:1.3:86.7)/electron transfer layer (thickness: 25nm; Material: structural formula 8 materials)/electron injecting layer (thickness: 0.5nm; Material: LiF)/reflection electrode layer 9(thickness: 100nm; Material: Al).

In four kinds of color earth complex luminescent component in the OLED luminescent device of making among this manufacturing embodiment 1, the mazarine earth complex luminescent component is to be produced by fluorescent material (structural formula 5 materials), green luminescent component is produced by fluorescent material (structural formula 6 materials), light blue and emitting red light component is to be produced by phosphor material (structural formula 9 materials and structural formula 10 materials), and four kinds of earth complex luminescent component are overlapped.The polycomponent OLED luminescent device technology of making embodiment 1 is as shown in table 1 in conjunction with the every test result of full color OLED display of optical filtering technique making.

Make embodiment 2

This manufacturing embodiment 2 is that with the difference of making embodiment 1 structure and material of OLED luminescent device is different.It is as follows to make embodiment 2 material that uses and concrete structure:

Transparency conductive electrode layer 7(thickness: 220nm; Material: ITO)/hole injection layer (thickness: 40nm; Material: structural formula 3 materials)/hole transmission layer (thickness: 20nm; Material: structural formula 4 materials)/mazarine and red light emitting layer (thickness: 5nm; Material: structural formula 12 materials are doped in structural formula 13 materials by 3% weight ratio and consist of)/middle layer (thickness: 3.5nm; Material: structural formula 8 materials)/red light emitting layer (thickness: 10nm; Material: structural formula 14 materials are doped in structural formula 8 materials by 10% weight ratio and consist of)/electron transfer layer (thickness: 20nm; Material: structural formula 8 materials)/electron injecting layer (thickness: 2nm; Material: Li ₃N)/charge generating layer 11(thickness: 10nm; Material: structural formula 1 material)/hole transmission layer (thickness: 20nm; Material: structural formula 5 materials)/light blue and green light emitting layer (thickness: 30nm; Material: structural formula 9 materials, structural formula 15 materials, structural formula 11 materials consist of according to the weight proportion blending of 12:1:87)/electron transfer layer (thickness: 25nm; Material: structural formula 8 materials)/electron injecting layer (thickness: 0.5nm; Material: LiF)/reflection electrode layer 9(thickness: 100nm; Material: Al).

In the luminescent spectrum of the OLED luminescent device among this manufacturing embodiment 2 except comprising mazarine fluorescence radiation component and light blue phosphorescence earth complex luminescent component, also include two groups of emitting red light component and green luminescent component that come from the different phosphate luminescent material, the every test result of full color OLED display that this manufacturing embodiment 2 makes is as shown in table 1.

The comparative example

The difference of comparative example and above-mentioned manufacturing embodiment 1 is, in the luminescent spectrum of comparative example's full color OLED luminescent device, the blue-light-emitting component only is a kind of, does not have the existence of light blue earth complex luminescent component, and the structure of this OLED luminescent device specifically describes as follows:

Transparency conductive electrode layer 7(thickness: 220nm; Material: ITO)/hole injection layer (thickness: 40nm; Material: structural formula 3 materials)/hole transmission layer (thickness: 20nm; Material: structural formula 4 materials)/mazarine and green light emitting layer (thickness: 30nm; Material: structural formula 5 materials, structural formula 6 materials and structural formula 7 materials consist of according to the weight proportion blending of 5.5:0.5:94)/electron transfer layer (thickness: 20nm; Material: structural formula 8 materials)/electron injecting layer (thickness: 2nm; Material: Li ₃N)/charge generating layer 11(thickness: 10nm; Material: structural formula 1 material)/hole transmission layer (thickness: 20nm; Material: structural formula 4 materials)/red light emitting layer (thickness: 30nm; Material: the weight proportion blending of structural formula 8 materials, structural formula 10 material 90:10 consists of)/electron transfer layer (thickness: 25nm; Material: structural formula 8 materials)/electron injecting layer (thickness: 0.5nm; Material: LiF)/reflection electrode layer 9(thickness: 100nm; Material: Al).

The every test result of this comparing embodiment full color OLED display is as shown in table 1.

Table 1

* 1: white refers to adjust the magnitude of current of display different driving pixel, until reach the setting under a certain standard white light.

2: the driving effect under the display original intensity 500cd/cm2.

Can find out from table 1 and table 2, mazarine earth complex luminescent component and the light blue earth complex luminescent component of making the OLED luminescent device of making among embodiment 1 and the manufacturing embodiment 2 superpose mutually, emphasize and to have improved the blue pixel of OLED luminescent device luminous, simultaneously the luminous and red pixel of green pixel is luminous has good efficient and an excitation, pixel characteristic data from the OLED demonstration, red, green, the luminous high performance that all embodied of blue pixel, particularly be appreciated that the OLED display after long-time the driving, its chromaticity coordinates performance is stable.

And in described comparing embodiment, when not having light blue earth complex luminescent component, blue pixel is luminous all to be affected with the luminous efficient of green pixel, can find out from its test result, luminous and the green pixel of the blue pixel of OLED display is luminous to have by a relatively large margin decline than embodiment 1, the OLED display has produced serious color drift in long-time driving situation simultaneously, and the red paxel of display is divided relative raising.

In sum, adopt technique of the present invention to make the resultant effect that the full color OLED display has simplified manufacturing technique, improves the aspects such as product yields.Can utilize relatively simple production Technology, produce the high full color OLED display that has good red-green-blue quality of balance and efficient of cost performance.

Claims

1. polycomponent OLED luminescent device technology comprises filter sheet base plate, OLED luminescent device and is used for the luminous driver element of driving OLED luminescent device in conjunction with the full color OLED display of optical filtering technique making; Described filter sheet base plate comprises transparency carrier (1), blue color filter rete (2), black matrix" grid rete (3), green color filter rete (4) and Red lightscreening plate rete (5), blue color filter rete (2), green color filter rete (4) and Red lightscreening plate rete (5) cover on the transparency carrier (1), and black matrix" grid rete (3) is arranged between the optical filter rete of these three kinds of colors; Each optical filter rete all has an OLED luminescent device corresponding with it, and the structure of all OLED luminescent devices is identical, it is characterized in that: comprise in the electroluminescent luminescent spectrum that described OLED luminescent device produces in the energising situation at least two group CIE chromaticity coordinates Y values less than 0.55 blue-light-emitting component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component and CIE chromaticity coordinates Y value greater than 0.55 green luminescent component.

2. the full color OLED display made in conjunction with optical filtering technique of polycomponent OLED luminescent device technology as claimed in claim 1 is characterized in that: described at least two group blue-light-emitting component CIE chromaticity coordinates Y values are less than 0.25 mazarine earth complex luminescent component.

3. polycomponent OLED luminescent device technology as claimed in claim 1 is in conjunction with the full color OLED display of optical filtering technique making, it is characterized in that: comprise in the described at least two group blue-light-emitting components at least one group of CIE chromaticity coordinates Y value less than 0.25 mazarine earth complex luminescent component and at least one group of CIE chromaticity coordinates Y value greater than 0.25, the light blue earth complex luminescent component less than 0.55.

4. polycomponent OLED luminescent device technology as claimed in claim 1 is in conjunction with the full color OLED display of optical filtering technique making, it is characterized in that: also include white pixel zone (10) in the described filter sheet base plate, also be provided with black matrix" grid rete (3) between the optical filter rete of described white pixel zone (10) and other colors, also there is an OLED luminescent device corresponding with it in described white pixel zone (10).

5. polycomponent OLED luminescent device technology as claimed in claim 1 is in conjunction with the full color OLED display of optical filtering technique making, it is characterized in that: the structural form of described OLED luminescent device adopts the rhythmo structure form, it includes plural organic luminescence function film layer combination (8), be to be provided with many group organic luminescence function film layer combinations (8) between the anode of OLED luminescent device and the negative electrode, isolate by charge generating layer (11) between the adjacent organic luminescence function film layer combination (8).

6. polycomponent OLED luminescent device technology as claimed in claim 5 is in conjunction with the full color OLED display of optical filtering technique making, and it is characterized in that: the structure of described lamination OLED luminescent device is listed below:

(1) anode/the first organic luminescence function film layer combination (8)/charge generating layer (11)/second organic luminescence function film layer combination/negative electrode;

(2) anode/the first organic luminescence function film layer combination (8)/first charge generating layer (11)/second organic luminescence function film layer combination the/the second charge generating layer (11)/the 3rd organic luminescence function film layer combination/negative electrode;

(3) anode/first organic luminescence function film layer combination (8)/first charge generating layer (11)/second organic luminescence function film layer combination (8)/second charge generating layer (11)/... N organic luminescence function film layer combination (8)/negative electrode.

7. polycomponent OLED luminescent device technology as claimed in claim 5 is in conjunction with the full color OLED display of optical filtering technique making, it is characterized in that: comprise the first blue-light-emitting component, the second blue-light-emitting component, emitting red light component and green luminescent component in the luminescent spectrum of described lamination OLED luminescent device, described OLED luminescent device comprises two organic luminescence function film layer combinations (8), and this OLED luminescent device can list following multiple structure:

(1) the blue organic luminescence function film layer combination of anode/first (8)/charge generating layer (11)/second blueness, redness and green organic luminescence function film layer combination (8)/negative electrode;

(2) blue and the blue and red organic luminescence function film layer combination of green organic luminescence function rete combination/charge generating layer (11)/second (the 8)/negative electrode of anode/first;

(3) the blue and green organic luminescence function film layer combination of blue and red organic luminescence function film layer combination (the 8)/charge generating layer of anode/first (11)/second (8)/negative electrode;

(4) the blue organic luminescence function film layer combination of anode/second (8)/charge generating layer (11)/first blueness, green and red organic luminescence function film layer combination (8)/negative electrode;

(5) the blue and red organic luminescence function film layer combination of blue and green organic luminescence function film layer combination (the 8)/charge generating layer of anode/second (11)/first (8)/negative electrode;

(6) the blue and green organic luminescence function film layer combination of blue and red organic luminescence function film layer combination (the 8)/charge generating layer of anode/second (11)/first (8)/negative electrode;

(7) blue and second blue organic luminescence function film layer combination (8)/charge generating layer (11)/green and red organic luminescence function film layer combination (8)/negative electrode of anode/first;

(8) blue and second blue organic luminescence function film layer combination (the 8)/negative electrode of anode/green and red organic luminescence function film layer combination (8)/charge generating layer (11)/first.

8. polycomponent OLED luminescent device technology as claimed in claim 2 is in conjunction with the full color OLED display of optical filtering technique making, it is characterized in that: the object luminescent material for generation of the mazarine earth complex luminescent component adopts fluorescent material, adopt phosphor material for generation of the object luminescent material of light blue earth complex luminescent component, also adopt phosphor material for generation of the object luminescent material of emitting red light component and green luminescent component.

9. polycomponent OLED luminescent device technology as claimed in claim 5 is in conjunction with the full color OLED display of optical filtering technique making, it is characterized in that: in the described lamination OLED luminescent device, the material of charge generating layer (11) is selected from one or more the potpourri in following structural 1 material, structural formula 2 materials, and described structural formula is:

10. polycomponent OLED luminescent device technology as claimed in claim 1 is in conjunction with the full color OLED display of optical filtering technique making, and it is characterized in that: having a kind of material in the object luminescent material in the described OLED luminescent device at least is the organic phosphorescent material that contains iridium, nail, platinum, rhenium and palladium metal.

11. the full color OLED display that polycomponent OLED luminescent device technology as claimed in claim 1 is made in conjunction with optical filtering technique is characterized in that: be manufactured with the planarization rete (6) that is adjacent on the described optical filter rete.

12. the full color OLED display that polycomponent OLED luminescent device technology as claimed in claim 11 is made in conjunction with optical filtering technique is characterized in that: be provided with the protective seam that is adjacent on above-mentioned planarization rete (6).